Steam-controlling device.



/ No. 771,417. PATENTED OCT. 4, 1904.

A; E. BURROWS.

STEAM CONTROLLING DEVICE. APPLICATION IILED APR.16, 1904.

no MODEL. 0

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A TTORNEY.

, WITNESSES: 7

INVENTOR NO. 771,417. Patented October 4, 1904.

UNITED STATES PATENT OFFICE.

AMOS E. BURROWS, OF YORK, PENNSYLVANIA, ASSIGNOR TO BURROIVS MANUFACTURING COl\ IPANY, OF YORK, PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

STEAM-CONTROLLING DEVICE.

SPECIFICATION forming part of Letters Patent No. 771,417, dated October 4, 1904. Application filed April 16, 1904:. Serial No. 203,443. (No model.)

To whOm it y 00716677715 9" is a pipe entering the case 0. This pipe 5 Be it known that I, AMos E. BURRows, acitiis connected with the pipe (not shown) which zen of the United States, and a resident of the conducts water from the pump to the boiler. city and county of York, State of Pennsylva The water from pipe 9" enters case 0, passes nia, have invented certain new and useful Imup this case, and bears against the bottom of provements in Steam-Controlling Devices, of diaphragm f, against the top of which the which the following is a specification. steamrpressure bears, as previously described. My invention relates to improvements in So long as the flow of water through pipe 0' is steam-controlling devices; and the object of unobstructed the valve?) will be open and steam I0 my invention is to furnish a simple, compact, will pass to and actuate the pump. When the and efiicient means for automatically controlflow of water through pipe 9* is stopped by ling the operation of a boiler feed-pump. any automatic or other suitable apparatus or My invention is adapted more particularly means, the flow of water from the pump ceases for use in connection with a means'for'autoand the pressure of the water in pipe 0' and 5 matically closing ofi the water-supply pipe below the diaphragm increases, lifting the diawhich leads water from a pump to a steamphragm and closing valve 6 and shutting ofi 5 boiler when the water-level in the boiler the flow of steam therethrough. As soon as reaches a predetermined height and in which the pipe r is again unobstructed the pressure the continued action of the pump after the under diaphragm is reduced and the valve 6 is 20 closing off of the water-supply pipe might opened, permitting a flow of steam to the cause serious trouble. pump. The spring j is adjusted by turn ing'fi My invention is shown in central longituthe handle at, which through screw m raises dinal section in the accompanying drawing. or lowers the frame to loosen or tighten the a is a casing furnished with a balanced valve spring.

5 b and with a steam-inlet 0 on one side of the Havingthus described my invention,I claim valve and with a steam-outlet (Z on the other as new and desire to secure by Letters Patent side of the valve. The steam-inlet c is con- In a steam-controlling device, in combinanected to the boiler, which is not shown. The tion, a casing, a valve within said casing, a outlet all leads steam to the pump, also not steam-inlet and a steam-outlet, one upon one 3 shown. side of said valve and the other upon the other e is a stem connected at one end to valve 5 side, a diaphragm carrying said valve, one and at the other end to a diaphragm f, which side of said diaphragm being in connection is carried by and inclosed in a case 9, which with the steam, a case below and open to said is secured to and forms a continuation of the diaphragm, a water-pipe connecting with said 35 valve-casing a. The top of the diaphragm is case, astem carried by said diaphragm, aframe in connection with the steam in casing (0. carried by said case, aspring one end of which 5 IL is a threaded rod, carried by and projectbears against said frame and the other against ing down from the diaphragm, which carries ,a projection carried by said stem, a screw a nut or stop 71, which forms a bearing for one passing through said case and engaging said 4 end of a spring j, the other end of which bears frame, and means whereby said screw may be against astop k, which is carried by the upper turned to raise or lower said frame to adjust 9 end of a frame Z, the lower end of which is the tension of said spring. engaged by a screw m, a projection of which is furnished with an operating-handle a. AMOS E. BURROIVS. 45 0 is a case carried by the diaphragm-casing g, which incloses the frame Z and connected Witnesses: parts. The lower end of this case causes a M. J DORSEY,' stuffing-box p to make a tight joint around CHARLES A. MAY.

the projection or stem of screw m. 

